Tank.



C. E. ROGERS.

TANK.

non nu .we 1

. 9, 1907." 947,1 30. Patented Jan. 18,1910.

WITNESSES UNITED sTA'rEs cHARLEs n. Roeland-for DETROIT, yimminenti'.

TANK.

Specification-of Letters latent'.A Patented Jan. 1S,y 1910.

Application inea Aug-usi 19, 1907. serial N. 4389,22*.9.

.To all whom 'it may concemf E. ROGERS,

Be it known that I, CHARLES residing at l a citizen of the United States, Detroit, iii the County of Iayne and State of Michigan, have invented-certain new and i useful Improvements in Tanks; and I doll hereby declare the following tol be a full, l clear, and exact description of the inven-,l tion, such as will enable others skilled in the art to which it appertaiiis to make and use the same.

My invention relates to improvements in tanks, and the object of myinvention is to produce laige sized enamel lined steel tanks made in sections,'and so united together that each tank is practically in a single piece when it is finished, thus avoiding the use of gaskets between the sections.

In making large sized enamel lined tanks, such as are used for storing beer, for exam# le, it is customary to build up these tanks of steel sections having ianged edges, these edges being bolted together with gaskets between. Such a construction has been proved to be somewhat unsanitary after long use, and by my invention this objection is removed.

f In the accompanying drawing; Figure 1 shows a joint disconnected of' van enamel lined rtank, the upper flange being ground off and thelo-wer flange unground. Fig. 2

shows the same joint when completed, andA a tank made according to my invention.` In constructing tanks of this cliaractei, a sheet of steel of appropriate size, and rec-l tangular in shape, sumes the form of any suitable means. is then put into a special machine, whereby the ends of said cylinder are'turned over forming flat 'anges. The interiorof1 the flanged hollow cylinder has enamel then flo-wed onto it until its interior surface is thoroughly covered, and then said cylinder Fig. 3 shows in side elevation, partly in secis rolled so that it as j a hollow cylinder". The l abutting edges are then welded together by l This hollow cylinder p is put into a furnace and subjected to a heat sufficient to fuse the enamel. By means of an appropriate' machine, bolt holes are then cut through the flanges, and the sections are ready to be bolted together with gaskets interposed. All these steps are old-and well known. By my invention, however, as soon as one vof the hollow steel cylinders, represented by a in Fig. 1, is prepared, it is ground off down to the dotted line 3-3 in the lower part of Fig. 1, making aperfectly flat smooth llange,as shown at Zi, Fig. 1, the upper part of both the steel and the enamel being ground off. The flat surface ofthe flanges, such as b, are then tinned, c, Fig. 2, representing the layer of tin. Bolts d are then passed tlrough the holes inthe flanges b, and nuts e are screwed down upon said bolts. The joint is then sweated in the usual manner, thus making the two flanges into practically a continuous piece. The edges of the enamel upon the various sections of the tank come into closev contact,

and tlieresultis a tank which when finished, is practically made in one piece, which is perfectly tight and sanitary, and which contains no gaskets.-

' Having thus described my inventionm'hat I claim as new and desire to secure by Letters Patent, is

"An enamel lined steel-tank, consisting of top f and bottom pieces,

sections provided with flanged ends havingbolt holes therein, the whole provided with an enamel lining, said flanged ends being ground ofi and united by a layer ofti'n, and said sections being sweated together, ai'idbolts and nuts for securingthe wholev structure together, substantially as described.

In testimony whereof, I' aiir my signature,

iii` presence of two witnesses. v

CHARLES E. ROGERS.

i Witnesses:

H. H. HAGER, LOUIS DARWIN. 

